my question is probably very basic but I did not find an answer...
I wrote a function (public checkSomething that gets 2 strings) in program.cs when I tried to call this
Main method should be static so you can't call non static methods from static method.
change checkSomething to static.
if main method is not static then we need to create instance to call the main method. To create instant again we need to excute some code! Thats why I think this starting point Main
make Static.